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Assigning value to script variable

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# 1  
Old 02-18-2011
Assigning value to script variable
I am trying to assign the value returned by wc command to a script variale.

Code:
Code:
FILES_NAME='files_list';
NO_OF_FILES =${wc -l $FILES_NAME}`;

When the above code is run : it throws the error
Code:
${wc -l $FILES_NAME}: The specified substitution is not valid for this command.

what is the problemSmilie
Last edited by Franklin52; 02-18-2011 at 03:01 AM.. Reason: Please use code tags, thank you
# 2  
Old 02-18-2011
Code:
NO_OF_FILES=$(cat $FILES_NAME | wc -l)

Last edited by Franklin52; 02-18-2011 at 04:42 AM.. Reason: adding $ sign
# 3  
Old 02-18-2011
Re:Assigning value to script variable
The below code still giving error:

Code:

FILES_NAME='files_list';
NO_OF_FILES =$(wc -l $FILES_NAME);
Error:
unix_4.sh[6]: NO_OF_FILES: not found.
# 4  
Old 02-18-2011
There should be no space between NO_OF_FILES and =
Also, it should be $(wc -l <"$FILES_NAME")
This User Gave Thanks to Scrutinizer For This Post:
hiten.r.chauhan
# 5  
Old 02-18-2011
Quote:
Originally Posted by Scrutinizer
There should be no space between NO_OF_FILES and =
Also, it should be $(wc -l <"$FILES_NAME")
Should not work if the variable $FILES_NAME contains a list of files.
# 6  
Old 02-18-2011
Quote:
Originally Posted by Franklin52
Code:
NO_OF_FILES=$(cat FILES_NAME | wc -l)

Good point. Your solution works in that case (if we add a $ sign Smilie):
Code:
NO_OF_FILES=$(cat $FILES_NAME | wc -l )

If the variable contains files with spaces:
Code:
( IFS="
"
for i in $FILES_NAME
do 
  cat "$i"
done ) | wc -l

Last edited by Scrutinizer; 02-18-2011 at 04:35 AM..
# 7  
Old 02-18-2011
I am trying to get the absolute pathe of the files listed by the code give below .

Code:
#!/bin/csh
FILES_NAME='files_list';
FILE_NAME_PATTERN='uni*';
ls -l $FILE_NAME_PATTERN;
NO_OF_FILES=$(wc -l <"$FILES_NAME");
echo $FILES_LIST;
mail hiten.r.chauhan@gmail.com<<EOF
`ls -l $FILE_NAME_PATTERN`
No of files named $FILE_NAME_PATTERN = $NO_OF_FILES
EOF
rm -f $FILES_NAME;

This code works fine and sends mail as shown below.
Code:
-rw-r----- 1 hitendra seo 205 Feb 15 12:05 uni_1b.sh
-rwxr-xr-- 1 hitendra seo 183 Feb 17 13:44 unix_1a.sh
-rwxr-xr-- 1 hitendra seo 1133 Feb 17 13:52 unix_2.sh
-rwxr-xr-- 1 hitendra seo 131 Feb 17 17:47 unix_3.sh
-rwxr-xr-- 1 hitendra seo 1 Feb 17 13:40 unix_3_instr
-rwxr-xr-- 1 hitendra seo 284 Feb 18 13:49 unix_4.sh
-rw-r----- 1 hitendra seo 12 Feb 17 17:16 unix_5.sh


The home directory structure path is /home/seo/hitendra and the above files are located at the home directory itself.
I want the complete path of the above listed file.

So instead of
Code:
-rw-r----- 1 hitendra seo 205 Feb 15 12:05 uni_1b.sh

I want
Code:
/home/seo/hitendra/uni_1b.sh

Last edited by hiten.r.chauhan; 02-18-2011 at 06:17 AM.. Reason: not properly formated
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